Composite adsorbents for environmental remediation

A composite adsorbent with a ferromagnetic metal core and activated carbon shell addresses the inefficiencies of conventional PFAS remediation by enabling one-stage removal and mineralization, enhancing adsorption capacity and reducing costs.

WO2026122434A1 Publication Date: 2026-06-11CACTUS ANTIMICROBIAL INC
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
CACTUS ANTIMICROBIAL INC
Filing Date
2025-12-01
Publication Date
2026-06-11

AI Technical Summary

⚠Technical Problem

Conventional remediation technologies for PFAS are expensive, inefficient, and require additional treatment steps for mineralization, and existing adsorbents lack specificity for PFAS.

⚗Method used

A composite adsorbent comprising a ferromagnetic metal core encapsulated by activated carbon, which selectively adsorbs PFAS through size exclusion and facilitates mineralization via heating, allowing one-stage removal and destruction.

🎯Benefits of technology

The composite adsorbent effectively removes and mineralizes PFAS, reducing the need for additional treatment steps and enhancing adsorption capacity through size exclusion and hydrophobic interactions, while being cost-effective.

✦ Generated by Eureka AI based on patent content.

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Abstract

Composite adsorbents based on ferromagnetic metals selectively adsorb fluorinated compounds such as per- and polyfluoroalkyl substances (PFAS). The adsorbent is formed from a ferromagnetic metal and fluorinated carbons. The activated carbon may be spherical, non-spherical or fractal, have a particle size diameter between about 20 µm to 5 mm. The core may be in the form of Fe0, Fe2O3, Fe3O4, Co and its alloys, Ni and its alloys, steel, carbon steel, or stainless steel. The adsorbent can be synthesized by carbonizing in a presence of ferromagnetic metal particles, removing non-carbonized ferromagnetic metal particles, activating the activated carbon of the adsorbent, fluorinating the adsorbent, washing the adsorbent, and drying the adsorbent. The adsorbents can be utilized in a packed bed column and regenerated by heating.
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